Fujitsu Corporation

Masaki Obuchi

Hideaki Tanaka

Shigeru Shimizu

Tatsuya Haga

Hiroaki Murai

Noriyuki Sato

Yuichi Hirao

Masami Aihara

Mitsuhiko Sugiyama

Takumi Kakuya

A disk storage device stores write data in a cache area of a data buffer according to a write command from a host, reports write completion to the host, and then writes the write data in the cache area to a storage medium. The disk storage device stores the write data stored in the data buffer in a save area created on the storage disk in response to the reception of a command which requires integrity, other than a write command, and reports a response to the host. Therefore processing time of this command and response time to the host can be decreased, while maintaining the safety of the write data.

Disk storage device and cache control method for disk storage device

Growing community of inventors

Kawasaki, Japan

Masaki Obuchi